1931 American League Win Probability

Other Leagues: Major Leagues, NL, NNL

Pennant Winner: Philadelphia Athletics

AL Most Valuable Player: Lefty Grove

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Team Win Probability*

Team Win Probability* Table
Tm	RA/G	PtchR	PtchW	Plays	WPA	WPA+	WPA-	aLI	WPA/LI	Clutch	cWPA	cWPA+	cWPA-	acLI	cClutch	RE24	REW	boLI	RE24/boLI	LevHi	LevMd	LevLo
Boston Red Sox	5.23	-33.7	-3.0	5519	0.9	93.8	-92.9	1.02	-0.8	1.7	-1.2%	28.4%	-29.6%	.54	-1.8%	-47.7	-4.3	0.98	-14.7	30	26	86
Chicago White Sox	6.02	-131.1	-11.7	6225	-13.3	101.5	-114.9	1.01	-12.7	-0.4	-2.7%	28.8%	-31.4%	.49	-3.2%	-169.5	-15.3	0.99	-130.1	38	31	94
Cleveland Indians	5.37	-5.4	-0.3	6096	-3.7	97.1	-100.8	.94	-2.2	-1.8	-3.4%	39.4%	-42.8%	.65	-4.7%	-35.3	-3.0	0.98	-12.0	34	28	59
Detroit Tigers	5.43	-3.4	0.0	5604	1.2	101.0	-99.8	1.06	-1.5	2.7	3.3%	43.8%	-40.5%	.75	4.8%	-24.7	-1.9	0.97	-12.3	18	18	45
New York Yankees	4.90	-26.2	-2.1	5891	1.1	100.9	-99.8	1.01	4.5	-3.3	-1.2%	83.3%	-84.5%	1.39	-1.1%	13.0	1.6	0.97	43.9	54	21	50
Philadelphia Athletics	4.09	149.3	14.9	5937	20.5	116.0	-95.5	1.04	16.7	3.0	32.5%	193.8%	-161.3%	2.94	2.7%	179.6	18.0	0.94	216.4	32	13	37
St. Louis Browns	5.65	-28.0	-2.4	5785	-4.9	99.2	-104.2	1.01	-2.8	-2.1	-3.3%	20.8%	-24.1%	.37	-8.0%	-72.4	-6.3	0.96	-31.8	24	19	74
Washington Senators	4.42	85.7	8.2	5499	9.8	100.4	-90.6	1.03	10.1	-0.6	9.9%	132.8%	-122.9%	2.26	0.4%	95.5	9.3	0.94	129.8	48	30	54
League Average	5.14	1	0	5820	1	101	-100	1.01	1	0	4%	71%	-67%	1.17	3%	-8	-0	0	24	35	23	62
	5.14	7.1	3.6	46556	11.5	809.9	-798.5	1.01	11.1	0.2	34.0%	571.1%	-537.1%	1.17	21.2%	-61.5	-1.8	0.97	189.2	278	186	499

* - Disclaimer & Completeness Note

* Many detailed statistics are based on play-by-play accounts accumulated by Retrosheet. These totals may be incomplete (3.6% of all plays from 1914 to 1972 are missing or have incomplete accounts, click link for year and team summary of data completeness) for some players prior to 1973 and even complete seasons may not match the official totals due to errors in both the official totals and the play-by-play accounts. Pre-1954 seasons have a substantial numbers of games missing play-by-play accounts and should be viewed as essentially incomplete.